Loading a torus

I am designing a torus based structure and want to laod it with a radial load diametrically opposite the reaction force. Then re-run with the loading in four directions.

How do I apply the loads and reactions to the inside of the curved surface of the torus?

My initial runs, I generated a flat surface on the inside of the ring, extruded into the ring, and applied the loads to that surface. I am not convinced that this is accurate but I can't see a way of applying the loading to that surface.

Here is an image of the basic torus including the additional surfaces I added to apply the loading.

The torus is ideally loaded using a loop of rope or similar around the ring at points 1-4. An initial run with the loading at points 1 & 3 would be advantagious. As the loading has been applied to the flat surfaces, rather than surrounding the ring, like a rope would, be a larger concentration of the loading on the inner face. Where as a rope would compress around the ring, leading to a much different distribution of stress at these points. This would probably alter the results quite significantly.

I got the split line to work and the results have not changed as much as expected. I attempted to simulate the rope contact, using a steel eye but could not the correct contact between the components, then crashed the solver, so I have given up on that for the moment.

solver actually crashed or it failed to complete? if you were using contact, i could see the latter happening, would really need to spend time to make sure things are setup in a stable manner. if you wanted someone to take a deeper look at this, feel free to email it to me at jared@hawkridgesys.com. we could either build an education program around it or set it up and solve it for you or both. or if you just need a second opinoin, we can do that as well.